Security Developer III (Contractor)

Philadelphia, Pennsylvania

Onsite

Contract

Full Stack Security Developer – IAM

A leading technology and cybersecurity organization is seeking a Full Stack Security Developer to join its core Cybersecurity team in Philadelphia, PA on a contract basis. This role will focus on architecting, developing, and maintaining security-focused applications supporting Identity and Access Management (IAM), using technologies including Angular, Java 17, Spring Boot, Spring Security, Node.js, REST APIs, MySQL, MongoDB, and AWS. This is a hybrid opportunity requiring the candidate to work onsite 2–3 days per week.

This is an opportunity to take a lead role in building security tools that operate at enterprise scale. The team manages multiple applications supporting the security organization and is looking for a developer who can do more than simply execute requirements—they want someone who can design solutions, bring new ideas to the table, lead technical efforts, mentor team members, and collaborate directly with stakeholders. You’ll work across the full development lifecycle while helping the team continue its cloud-native journey and migrate applications to AWS. If you enjoy solving complex problems, working in a security-first environment, and having ownership over the solutions you build, this role offers strong opportunities to expand your full-stack, cloud, and cybersecurity expertise.

Required Skills & Experience

Full-stack software development experience with both front-end and back-end development
Strong experience with Angular, preferably recent versions
Strong Java 17 development experience
Experience with Spring Boot and Spring Security
Strong experience developing and integrating REST APIs
Hands-on experience with AWS and cloud-native application development
Experience with Node.js
Experience working with MySQL and/or MongoDB
Understanding of secure software development practices and security protocols
Experience with security scanning, code reviews, static code analysis, and secure coding standards
Understanding of software architecture and design through production deployment
Experience with DevOps tools and automated application build/deployment processes
Experience working in Agile development environments
Strong communication and collaboration skills

Desired Skills & Experience

Experience developing applications within Identity and Access Management (IAM) environments
Experience with enterprise-scale applications and web services
Experience with cloud migration and modernizing applications for AWS
Experience with Test Driven Development (TDD) and/or Behavior Driven Development (BDD)
Experience with open-source frameworks
Experience working in a cybersecurity-focused organization
Ability to evaluate new technologies and recommend solutions
Experience mentoring or coaching junior developers
Bachelor's degree or equivalent experience in technology, software development, or security
Ability to independently develop technical designs and propose innovative solutions

What You Will Be Doing Tech Breakdown

30% Angular / Front-End Development
30% Java / Spring Boot / Back-End Development
15% REST APIs & Application Integration
10% AWS / Cloud Migration
10% MySQL / MongoDB
5% Security / DevOps / Automation

Daily Responsibilities

60% Hands-On Development – Design, develop, test, secure, and maintain IAM applications and reusable security components across the full technology stack.
20% Technical Leadership & Design – Develop technical solutions, identify platform gaps, propose improvements, evaluate new technologies, and take ownership of development initiatives.
20% Team Collaboration – Participate in code reviews, mentor team members, collaborate with security and technology stakeholders, troubleshoot production issues, and help drive projects through successful delivery.

As part of our promise to talent, Kelly supports those who work with us through a variety of benefits, perks, and work-related resources. Kelly offers eligible employees voluntary benefit plans including medical, dental, vision, telemedicine, term life, whole life, accident insurance, critical illness, a legal plan, and short-term disability.

As a Kelly employee, you will have access to a retirement savings plan, service bonus and holiday pay plans (earn up to eight paid holidays per benefit year), and a transit spending account. In addition, employees are entitled to earn paid sick leave under the applicable state or local plan.

Click here for more information on benefits and perks that may be available to you as a member of the Kelly Talent Community.

Business team having a meeting in a modern office.

What you didn’t know about us:

Competitive salary
Health, Dental and Vision Benefits
Short/Long Term Disability and Critical Care/Illness Protection
Life Insurance and Retirement Plans
Employee Assistance Program
With this position, you will get the opportunity to work with our game changing clients and further advance your already valuable experience in the telecom industry!

We are Connectors. We thrive on ‘quality over quantity’ and put in the work building strong relationships. We create connections, discover qualities, uncover skills, and place people with accuracy. We are your true partner!

We are Collaborators. You’ll be working with a wholly-owned subsidiary of Kelly and part of the Kelly Telecom division. It allows us to be as nimble and fiercely competitive as a startup while having the backing of a multibillion dollar publicly traded company which has been in business for 75 years. With direct access to hiring managers, services don’t stop at standard recruiting processes. We use our expertise to improve your application skills and provide ongoing career support.

We give 24/7 Support. We are in this together. We provide around the clock availability, competitive employee benefits, and continuously check-in to make sure things are going smoothly. Check out our Glassdoor page!

Kelly Telecom is an equal opportunity employer and will consider all applications without regard to race, genetic information, sex, age, color, religion, national origin, veteran status, disability, or any other characteristic protected by law. For more information click Equal Employment Opportunity is the law.

You should know: Your safety matters! Vaccination against COVID-19 may be a requirement for this job in compliance with current client and governmental policies. A recruiter will confirm and share more details with you during the interview process.